Lost Clown Goby

[Brent F]

Check the floor if the tank is open top.

If it did die in the tank it could have been cleaned up by the hermits one night without you knowing it so your crabs being in plain sight doesn't make much difference.

I have a Green Clown Goby and the only time I see it is when feeding with frozen foods (brine shrimp or worms). It quickly darts out and grabs a piece. When feeding pellets or freeze dried food it never comes out.